Adsorption of trace elements on solid surfaces

After release from primary minerals, a major proportion of trace element cations are immobilised by adsorption upon inorganic and organic surfaces in the soil. Adsorption may be defined as the adhesion, in an extremely thin layer, of gas molecules, liquids or dissolved substances, to the surfaces of solids. Micronutrient cations Mn, Fe, Co, Cu and Zn may be held by cation exchange reactions and are, therefore, held near the 

For each metal there is a critical pH range, usually one pH unit or 

Addition of FA to a system containing goethite, which is active in 

Nevertheless, it is possible to show that the complexation of these metals 

The effectiveness of non-humic organic ligands such as amino acids and organic acids, in influencing adsorption of trace elements upon soil 

---